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BTS426L1

BTS426L1 Description

The BTS426L1 from Infineon Technologies is a high-side power switch designed for general-purpose load control in automotive and industrial applications. Part of the PROFET® series, this N-channel MOSFET-based switch integrates advanced protection features while delivering 5.8A maximum output current with a low 50mOhm typical Rds(on). It operates over a 5V to 34V load voltage range and requires no separate supply voltage (Vcc/Vdd), simplifying system design. Housed in a TO-220-5 through-hole package, it is ideal for rugged environments.

BTS426L1 Features

• High-Side Configuration: Eliminates the need for external pull-down resistors.
• Integrated Protections: Includes fixed current limiting, open-load detection, overtemperature shutdown, and overvoltage clamp for robust fault management.
• Auto-Restart & Status Flag: Automatically recovers from faults and provides diagnostic feedback.
• Low Power Dissipation: 50mOhm Rds(on) minimizes heat generation, improving efficiency.
• Wide Load Voltage Range (5V–34V): Supports 12V/24V automotive systems and industrial power rails.
• 1:1 Input-to-Output Ratio: Direct logic-level control without level-shifting circuitry.

BTS426L1 Applications

• Automotive Systems: ECU loads, lighting modules, and solenoid drivers.
• Industrial Controls: Relay/actuator driving, PLC output stages, and power distribution.
• HVAC & Appliances: Fan motors, valve controls, and high-current switching.
• Power Management: Hot-swap circuits and redundant power supplies.

Conclusion of BTS426L1

The BTS426L1 excels in high-reliability applications demanding compact design, low losses, and comprehensive protection. Its obsolete status may limit new designs, but its PROFET® heritage ensures proven performance in harsh environments. Ideal for legacy systems or replacements requiring high-current switching with diagnostics, it remains a benchmark for integrated power switches.